Wi-Fi & routers

Too many devices are slowing down the Wi-Fi

A router shared by many phones, laptops, TVs, and smart home gadgets can become overloaded, and the fix is usually to reduce active demand, upgrade to a router built for more devices, or split the load with a mesh system.

Difficulty
Easy
Time
15–30 minutes
DIY cost
$0–$200
Pro cost
$0–$100

Symptoms

  • Wi-Fi slows down noticeably when more people are home or more devices are active
  • Streaming buffers when someone else starts a video call or download
  • Router's device list shows dozens of connected devices
  • Speed is fine with only a few devices connected

Likely causes

  • CommonConsumer router hardware limits on simultaneous connectionsBudget and mid-range routers are built to handle a certain number of active devices well before performance degrades.
  • CommonA few devices consuming most of the bandwidthStreaming, gaming, and large downloads use far more bandwidth than idle devices like smart plugs.
  • PossibleInternet plan speed too low for the household's total usageEven a great router can't exceed the total bandwidth your ISP provides.
  • PossibleOld Wi-Fi standard (like Wi-Fi 4) struggling with modern device countsNewer Wi-Fi standards (Wi-Fi 5/6) handle many simultaneous devices far better.

What to do

  1. Check the router's connected devices list and disconnect or forget devices you no longer use.
  2. Identify which devices or activities use the most bandwidth (streaming in 4K, large downloads, cloud backups) and stagger them where possible.
  3. Check your internet plan's advertised speed against how many people are streaming or gaming simultaneously; a rough guide is 15–25 Mbps per active heavy-use device.
  4. Update the router's firmware, since manufacturers periodically improve how routers handle many connections.
  5. If your router is more than 4–5 years old, consider upgrading to a newer Wi-Fi 5 or Wi-Fi 6 router, which handle multiple devices more efficiently.
  6. For larger homes with many devices, a mesh Wi-Fi system spreads the connection load across multiple access points rather than one router.
  7. Consider upgrading your internet plan if your total household usage regularly exceeds what you're paying for.

Tools and parts

Wi-Fi 6 routerSearch: “wifi 6 router multiple devices”

When to call a pro

An ISP or networking professional can help calculate the right internet plan and router setup for a home with a large number of connected devices.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.